Nakano Note (Nakano wa Kangaeru noda) NK 3970 327P/Van Ness
The following improved orbital elements, by S. Nakano, are from 114 observations 2002 to 2016. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.75 arc second. See the previous orbits in NK 983, NK 2994 and NK 3024. Epoch = 2015 Dec. 4.0 TT T = 2015 Dec. 12.42818 +/- 0.00018 (m.e.) TT Peri. = 185.09471 +/- 0.00009 Node = 173.96275 +/- 0.00003 (2000.0) Inc. = 36.21451 +/- 0.00002 q = 1.5603422 +/- 0.0000008 AU e = 0.5625440 +/- 0.0000002 a = 3.5668548 +/- 0.0000026 AU n' = 0.14631065 +/- 0.00000016 P = 6.736 +/- 0.0000074 years T = 2002 July 15.98725 TT Epoch = 2002 July 25.0 TT Peri. = 184.74945 e = 0.5696595 Node = 174.10332 (2000.0) a = 3.5352825 AU Inc. = 36.36854 n'= 0.14827498 q = 1.5213751 AU P = 6.647 years T = 2009 Mar. 21.71748 TT Epoch = 2009 Mar. 30.0 TT Peri. = 185.02205 e = 0.5639993 Node = 173.99916 (2000.0) a = 3.5578678 AU Inc. = 36.28207 n'= 0.14686535 q = 1.5512330 AU P = 6.711 years The predicted orbit for the 2022 return is as follows: T = 2022 Sept. 2.40828 TT Epoch = 2022 Sept.18.0 TT Peri. = 185.03200 e = 0.5633376 Node = 173.98499 (2000.0) a = 3.5635489 AU Inc. = 36.25115 n'= 0.14651429 q = 1.5560680 AU P = 6.727 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2002/ 020910 349 0.6+ 0.4+ 150909 585 0.7- 0.6- 020817 699 (3.0- 0.9+) 020912 360 0.7+ 0.2- 150911 K25 0.1- 0.1- 020817 699 1.5- 0.0 020912 360 0.8+ 0.5- 150911 K25 0.5+ 0.0 020817 699 (4.9- 0.4+) 020918 360 1.3+ 0.5- 150917 K25 0.2+ 0.2- 020817 699 (4.9- 0.4-) 020918 360 0.9+ 0.0 150917 K25 1.0+ 0.1- 020818 046 0.1+ 0.0 020919 349 0.6+ 0.3+ 150929 C51 0.8- 0.2- 020818 046 0.2- 0.7- 020919 349 1.2+ 1.2- 150929 C51 0.1- 0.7- 020818 046 0.5+ 0.1- 020919 349 (0.5+ 2.1-) 150929 C51 1.5- 0.5- 020818 046 0.9- 0.1+ 020923 340 0.8- 1.8+ 150929 C51 0.0 0.2+ 020818 046 1.5- 0.3- 020923 340 1.9- 0.9- 150929 C51 (2.0+ 1.3+) 020818 046 0.3- 0.5- 020923 340 (8.3- 1.1+) 150929 C51 0.1+ 0.8+ 020818 046 0.1+ 0.1+ 020923 340 (1.3- 2.2+) 151002 A71 0.6+ 1.0+ 020818 118 0.3+ 1.6+ 020930 118 0.4+ 1.2+ 151002 A71 0.4+ 0.5+ 020818 118 1.6- 0.1- 020930 118 (0.6+ 2.1+) 151031 J22 0.4+ 0.0 020818 118 1.2- 0.2+ 021010 699 0.6- 1.1+ 151031 J22 0.6- 0.0 020818 118 0.1+ 0.5- 021010 699 0.7- 0.3+ 151031 J22 0.6+ 0.4- 020818 620 (5.1- 0.9+) 021010 699 0.0 1.4+ 151121 703 0.5+ 0.6+ 020818 620 1.9+ 0.2- 021010 699 0.3+ 0.9+ 151121 703 (3.0+ 0.5+) 020818 620 (2.5- 0.7-) 021014 428 1.2+ 0.1- 151121 703 1.7+ 0.9+ 020818 620 (0.9+ 2.0+) 021014 360 0.7+ 0.8- 151121 703 0.2- 0.1- 020818 620 1.5- 1.1+ 021014 360 0.9+ 0.4- 151127 Z22 0.6- 0.2+ 020818 658 0.1+ 0.6- 021014 360 1.2+ 0.2+ 151127 Z22 0.4- 1.7+ 020818 658 0.3- 0.5- 2015/ 151127 Z22 1.5+ 0.4+ 020818 658 0.2- 0.3+ 150806 F51 0.2- 0.0 151206 703 0.8+ 0.8+ 020818 848 1.2- 0.4+ 150806 F51 0.2- 0.2- 151206 703 1.1+ 1.5+ 020818 848 1.2- 0.4- 150806 F51 0.0 0.0 151206 703 (2.5+ 2.8+) 020818 848 0.4- 0.7- 150810 461 0.0 0.1+ 151208 A71 0.8- 0.8+ 020819 848 0.9+ 1.0- 150810 461 0.6+ 0.1- 151208 A71 0.7- 0.6- 020819 848 0.7- 1.3- 150810 461 0.2+ 0.2+ 151214 T05 (3.5+ 2.7+) 020819 848 0.5- 0.6- 150812 H06 0.1- 0.2+ 151214 T05 0.3+ 1.7+ 020819 413 0.5+ 0.4- 150812 H06 0.7+ 1.0+ 151214 T05 (0.4- 2.0+) 020819 413 0.5+ 0.5- 150812 H06 1.9+ 1.9+ 151214 T05 1.7+ 0.5+ 020819 413 0.4+ 0.1- 150812 215 0.0 0.0 151222 J22 1.0- 0.3- 020820 349 0.2- 0.8- 150812 215 0.3- 0.2+ 151222 J22 0.1- 0.8- 020820 349 0.3+ 0.5- 150812 215 0.8- 0.2+ 151222 J22 (0.7- 2.3-) 020820 349 0.2- 0.3- 150818 A71 0.3+ 0.3- 151228 A71 (1.6+ 2.2+) 020820 349 0.1+ 1.0- 150818 A71 0.2+ 0.2+ 151228 A71 0.8+ 1.3+ 020821 170 0.4- 0.5+ 150903 G40 0.3+ 0.1- 2016/ 020821 170 1.0- 1.2- 150903 G40 0.0 0.3- 160112 T05 0.3+ 1.2+ 020830 349 1.9- 0.4+ 150907 K25 0.9- 1.4- 160112 T05 (2.1+ 0.6+) 020830 349 (2.6- 0.7-) 150907 K25 1.4+ 0.5+ 160112 T05 0.3+ 1.2+ 020830 349 0.3- 1.2+ 150909 585 0.9- 0.1- 160112 T05 0.0 1.7+ 020831 J95 (2.0- 1.1+) 150909 585 0.3+ 0.1- 160302 Q62 0.6+ 0.5+ 020831 J95 0.9+ 1.9- 150909 585 0.1+ 0.0 160302 Q62 0.9+ 0.1+ 020910 349 0.8+ 1.4- 150909 585 0.4+ 0.8- 160302 Q62 1.1+ 0.1+ 020910 349 0.0 0.7- 150909 585 0.4- 0.6- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2019 Dec. 11